LE Orthoses Flashcards
1
Q
Prefabricated Orthoses
A
- mass produced in various typical sizes & materials
- less expensive
- more variable ability to control
- more readily available
- evaluative tool
2
Q
Thermoplastic Materials
A
- denoting substances that become plastic on heating & harden on cooling
- can reheat & reshape
3
Q
Thermosetting Materials
A
- once heated & cooled, will remain that shape
- unalterable
4
Q
UCBL Orthosis
A
- used when STJ is unstable
- effecting in controlling flexible calcaneal deformity
- high trim lines
- rigid / semi-rigid materials
5
Q
AFO
A
- patients with unstable ankles: want to support, maintain alignment during activity, or limit & protect healing structures
- patients with NM dysfunction: want to substitute for inadequate muscle function, manage abnormal tone, or minimize risk of deformity
6
Q
Posterior Leaf-Spring AFO
A
- AFO with posterior trimlines
- approximates 1st & 2nd rockers & helps clear & preposition foot during swing
- flexible ankle
7
Q
Floor Reaction of AFO
A
- translation of GRF into anterior stabilizing bar causes knee extension
- anterior trimlines = prevention of PF/DF
- maximum stiffness on top
- anterior tibial component drives tibia into extension during 2nd rocker
8
Q
Articulated AFO
A
- allows more normal progression of gait
- stops can be used to prevent unwanted PF/DF
9
Q
Custom-molded AFO
A
- can be used in more than 1 pair of shoes
- lighter weight
- distributes forces over SA
- edema is only true contraindication
10
Q
Double Upright AFO
A
- accommodates changes in volume
- heavier
- only 1 pair of shoes
- noisy during gait
11
Q
Hinged AFO
A
- allows normal ankle motion while controlling inversion/eversion
- PF = extension moment
- DF = flexion moment
12
Q
Dual Channel Ankle Joint
A
- pin in anterior channel blocks DF
- pin in posterior channel blocks PF
- spring in posterior channel assists DF
- spring in anterior channel assists PF
13
Q
Patellar-Tendon Bearing Orthosis
A
- WB orthosis that limits axial load through foot/ankle
- WB through patellar tendon & transferred to ground through orthosis
